Thread: What degree of hollowness are these?

Originally Posted by Utopian

There is an easy way to see if a blade is double ground, which is the case for most full hollows. Hold the blade so that the face is reflecting a light source. Rotate the blade on its long axis so that the reflection moves from the spine to the edge.
If the blade is single ground and therefore has no belly, then the reflection will uniformly travel from the spine to the edge.
If the blade is double ground and has a belly, then as the light approaches the belly, the reflection will also appear at the edge and two light reflections will merge at the peak of the belly.

Just checked both of them, and they are definitely both double ground. The light reflection clearly shows this when I rotate it to see the reflection. Nice and easy way to check, thanks for the tip!